What actually moves a currency

Interest rates, the dominant force

Capital moves toward yield. If deposits in one currency pay 5% and another pays 1%, money flows toward the first, and the demand pushes its exchange rate up. This is the single most reliable driver of medium-term currency movement.

The critical refinement is that markets trade the expected path rather than today's rate. If a central bank is at 3% and everyone expects 5% within a year, the currency is already trading much of that move. When the hike arrives it may barely react. Or fall, if the accompanying language suggests fewer hikes to come than the market had priced.

This is why "buy the rumour, sell the fact" is not cynicism but a description of how discounting works. The tradable event is almost never the decision itself; it is the gap between the decision and what was expected.

Inflation and growth

Inflation matters because central banks respond to it. Higher-than-expected inflation raises the expected rate path, which strengthens the currency. The exact opposite of the intuition that inflation devalues money. Over decades the intuition is right; over a trading horizon the rate-expectation channel dominates completely.

This is why CPI releases are among the most volatile events in forex and gold. They move rate expectations directly, and everything reprices at once.

Growth works through the same chain. Strong GDP and employment data support tighter policy; weakness supports easing. US non-farm payrolls, released on the first Friday of each month, moves the dollar for precisely this reason.

The practical skill is reading data relative to the forecast. Every calendar publishes a consensus. A 3.2% inflation print against a 3.5% forecast is a downside surprise and the currency typically falls, even though 3.2% is high in absolute terms.

Risk sentiment and flows

In calm conditions capital chases yield. In stressed conditions it runs for safety, and rate differentials stop mattering.

Safe havens (the US dollar, Japanese yen, Swiss franc and gold) strengthen during equity selloffs, geopolitical escalation and banking stress. Risk-sensitive currencies (the Australian and New Zealand dollars, emerging-market currencies) weaken.

Watching the correlation is diagnostic. When AUD/USD tracks the S&P 500 closely, sentiment is driving; when it decouples and follows the rate spread, fundamentals are back in charge. That single observation tells you which model to apply today.

Gold sits at the intersection: driven by real yields most of the time, and by fear when fear is present, which is why it occasionally rises alongside the dollar and confuses people.

Reading the economic calendar

Every economic calendar shows the event, its expected impact, the consensus forecast and the previous reading. The events that reliably move major pairs:

Two rules that cost nothing. Know what is scheduled before you enter. Being long into an unexpected decision is a position you did not choose. And expect spreads to widen around major releases; entering in the first seconds means paying several times the normal cost.

MarketPro's review layer rejects candidate signals with event risk inside the expected holding period, which is one of the things the second stage is for. See how signals are produced.